38 lines
594 B
Perl
38 lines
594 B
Perl
#!./perl
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use strict;
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use warnings;
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use Test::More tests => 7;
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use List::Util qw(shuffle);
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my @r;
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@r = shuffle();
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ok( !@r, 'no args');
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@r = shuffle(9);
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is( 0+@r, 1, '1 in 1 out');
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is( $r[0], 9, 'one arg');
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my @in = 1..100;
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@r = shuffle(@in);
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is( 0+@r, 0+@in, 'arg count');
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isnt( "@r", "@in", 'result different to args');
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my @s = sort { $a <=> $b } @r;
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is( "@in", "@s", 'values');
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{
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local $List::Util::RAND = sub { 4/10 }; # chosen by a fair die
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@r = shuffle(1..10);
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is_deeply(
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[ shuffle(1..10) ],
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[ shuffle(1..10) ],
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'rigged rand() yields predictable output'
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);
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}
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